Bluehost (established in 1996) is the most reliable beginner-friendly web hosting out there. The cheapest plan starts from just $2.75/mo (if you pay for 36-month in advance), renewals start at $7.99/mo. With the basic plan, you can host 1 website. The plan includes a free domain for 1 year, 50GB SSD storage, unmetered bandwidth, free SSL and 24/7 live chat support.
Many web hosting services offer so-called unlimited or unmetered service for whatever amount of bandwidth, disk storage and sites you use. It's important to understand that most terms of service actually do limit the definition of "unlimited" to what's considered reasonable use. The bottom line is simple: if you're building a pretty basic website, unlimited means you don't need to worry. But if you're trying to do something excessive (or illegal, immoral or fattening), the fine print in the terms of service will trigger, and you'll either be asked to spend more or go elsewhere.